389675705 has 4 divisors (see below), whose sum is σ = 467610852. Its totient is φ = 311740560.

The previous prime is 389675701. The next prime is 389675719. The reversal of 389675705 is 507576983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507576983 = 173 ⋅2933971.

It can be written as a sum of positive squares in 2 ways, for example, as 156075049 + 233600656 = 12493^2 + 15284^2 .

It is not a de Polignac number, because 389675705 - 2² = 389675701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389675701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38967566 + ... + 38967575.

It is an arithmetic number, because the mean of its divisors is an integer number (116902713).

Almost surely, 2^389675705 is an apocalyptic number.

It is an amenable number.

389675705 is a deficient number, since it is larger than the sum of its proper divisors (77935147).

389675705 is an equidigital number, since it uses as much as digits as its factorization.

389675705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77935146.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The square root of 389675705 is about 19740.2052927522. The cubic root of 389675705 is about 730.4117930595.

The spelling of 389675705 in words is "three hundred eighty-nine million, six hundred seventy-five thousand, seven hundred five".